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Controlled photochemical particle growth in two-dimensional ordered metal nanoparticle arrays

机译:二维有序金属纳米粒子阵列中光化学粒子的受控生长

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摘要

We report on a universal technique which allows us to precisely manipulate the diameter of metal nanoparticles in two-dimensional particle arrays. The approach is demonstrated here for hexagonally ordered gold nanoparticle arrays fabricated by means of diblock copolymer micelle lithography (BCML). The particles are used as nucleation centers in seed-mediated photochemical metal deposition, whereby the particle diameter increas. Repeatedly combining photochemical growth with thermal annealing steps additionally facilitates controlling the shape of the particles.
机译:我们报告了一种通用技术,该技术可使我们精确地控制二维粒子阵列中金属纳米粒子的直径。此处通过双嵌段共聚物胶束光刻(BCML)制作的六角形有序金纳米颗粒阵列证明了该方法。该颗粒在种子介导的光化学金属沉积中用作成核中心,从而使粒径增加。将光化学生长与热退火步骤反复结合起来,还有助于控制颗粒的形状。

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